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Finding the Third Proportional to 57,260 and 122,128

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Solution

The third proportional to 57,260 and 122,128 is: 260,482.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,260 : 122,128 = 122,128 : x
  2. Step 2: Convert to fraction form
    57,260/122,128 = 122,128/x
  3. Step 3: Cross multiply
    57,260x = 122,128 × 122,128
  4. Step 4: Simplify right side
    57,260x = 14,915,248,384
  5. Step 5: Solve for x
    x = 14,915,248,384/57,260
  6. Step 6: Final answer
    x = 260,482.86

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.